Design a comprehensive lighting control system for a large commercial office building.

Comprehensive lighting control includes: zoning based on space function and daylight availability, occupancy sensing (vacancy for offices, occupancy for common areas) per ASHRAE 90.1, daylight harvesting with photosensors and continuous dimming, time scheduling with override capability, personal control at workstations, integration with BAS for coordination with HVAC, emergency lighting interface, and commissioning for proper sensor placement and calibration. Network-based systems (DALI, wireless) provide flexibility and data collection. Calculate energy savings to justify investment.